Sheet-metal radiator



(No Model.) v

' 'H. A. CROSSLEY;

SHEET METAL RADIATOR.

.No. 449,901. I Patented Apr. 7, 1891.

- llllllll biven'fiolt @QMJ/M UNIT D STATES PATENT OF ICE.

HARRY A. CROSSLEY, OF CLEVELAND, OHIO.

SH EET-M ETAL RADIATOR.

. SPECIFICATION To all whom it may concern:

Be it known that I, HARRY A. OROSSLEY, a citizen of the United States, residing at Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in Sheet-Metal Radiators, of which the following is a specification.

This invention relates to steam-heating radiators; and it consists of sheet-metal pipes or tubing for such purposes, as hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a side elevation of my new radiator, partly in section. Fig. 2 is a cross-section of the base. Fig. 3 represents ablank sheet having a row of holes punched for the necks to which the circulating-pipes are attached. Fig. 4 is a crosssection of one of the circulating-pipes. Fig: 5 represents the lower portion of the halfsheets pressed into shape to form the neck end of one of the circulating-pipes.

A represents a sheet of metal, (sheet-steel is preferable) along the center line of which is punched a row of holes having the metal turned outward to form short necks a a. The side edges of this sheet are bent to form aseam when the sheet is rolled to form the tubular body shown in Figs. 1 and 2. The ends of this tubular body are closed with heads B, formed of thicker metal, having screw-threaded necks b b.

C C are sheet-metal circulating tubes or pipes, which are constructed in manner as follows: The blank sheetsare cut to proper shape and size and are then pressed into halftubular shape with dies constructed for the purpose. Then their edges are bent or turned for the purpose of joining them together when constructing the pipes, as seen in Fig. 4. This represents a double pipe having one neck for attachment to the base. Single pipes maybe made in similar manner.- These circulatingpipes are made by taking two of these half pipes and joining their edges witha seamfolding machine, and also by securing their 'middle part together with rivets. Next, these circulating-tubes are attached to the base in manner as follows: The necks of the tubes or pipes are set over the necks a a on the base, as seen in section in Fig. 1, and then the whole are submerged in a galvanizing bath, which effectually closes or solders all the seams and joints when removed from the bath, and thus the radiator is completed. If needed, however, to strengthen the joints where the pipes join the base, extra solder may be added with a soldering-iron.

These radiators may be finished by bronzing, gilding, orotherwise ornamenting, and are therefore veryeconomically produced and make a very suitable article for the purpose.

Having described my invention, I claim as follows:

As a new article of manufacture, the sheetmetal radiator-tubing herein described, consisting of plates 0 O, joined together at their edges and their middle longitudinal line forming double tubes provided with a neck at one end, substantially as described.

HARRY A. OROSSLEY. 

